Providing group call priority access in LTE and priority access for user equipments with dual access classes
The disclosure relates to determining priority access with dual access barring classes. An aspect receives, at a client device, at least one high priority access barring class and at least one low priority access barring class, switches to the low priority access barring class, receives an access barring message, and switches to the high priority access barring class in response to receiving the access barring message. An aspect receives a call request for a high priority call among a group of client devices, transmits a notification to a network instructing it to transmit an access barring message in response to receiving the call request, wherein one or more members of the group of client devices switch to a high priority access class in response to receiving the access barring message, and suppresses call announcements for non-priority call requests after transmitting the notification.
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The present Application for Patent is a divisional application of U.S. application Ser. No. 14/012,931, entitled “PROVIDING GROUP CALL PRIORITY ACCESS IN LTE AND PRIORITY ACCESS FOR USER EQUIPMENTS WITH DUAL ACCESS CLASSES,” filed Aug. 28, 2013, which claims priority to Provisional Application No. 61/695,780, entitled “PROVIDING GROUP CALL PRIORITY ACCESS IN LTE AND PRIORITY ACCESS FOR USER EQUIPMENTS WITH DUAL ACCESS CLASSES,” filed Aug. 31, 2012, and which are assigned to the assignee hereof and hereby expressly incorporated by reference herein.
BACKGROUND1. Field of the Invention
Embodiments of the invention relate to providing group call priority access in Long Term Evolution (LTE) and priority access for user equipments (UEs) with dual access classes.
2. Description of the Related Art
Wireless communication systems have developed through various generations, including a first-generation analog wireless phone service (1G), a second-generation (2G) digital wireless phone service (including interim 2.5G and 2.75G networks) and third-generation (3G) and fourth-generation (4G) high speed data/Internet-capable wireless services. There are presently many different types of wireless communication systems in use, including Cellular and Personal Communications Service (PCS) systems. Examples of known cellular systems include the cellular Analog Advanced Mobile Phone System (AMPS), and digital cellular systems based on Code Division Multiple Access (CDMA), Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), the Global System for Mobile access (GSM) variation of TDMA, and newer hybrid digital communication systems using both TDMA and CDMA technologies.
More recently, Long Term Evolution (LTE) has been developed as a wireless communications protocol for wireless communication of high-speed data for mobile phones and other data terminals. LTE is based on GSM, and includes contributions from various GSM-related protocols such as Enhanced Data rates for GSM Evolution (EDGE), and Universal Mobile Telecommunications System (UMTS) protocols such as High-Speed Packet Access (HSPA).
A cellular system may support broadcast, multicast, and unicast services. A broadcast service is a service that may be received by all users, e.g., news broadcast. A multicast service is a service that may be received by a group of users, e.g., a subscription video service. A unicast service is a service intended for a specific user, e.g., voice call. Group communications can be implemented using either unicast, broadcast, multicast or a combination of each. As the group becomes larger it is generally more efficient to use multicast services.
Certain cellular systems offer group priority access, thereby improving the chance of high priority group members being able to access the network by reducing the access channel collision. This is achieved by preventing other low priority users from performing channel access procedures when a select high priority group call is placed.
LTE networks support access barring by broadcasting the class(es) or categories of subscribers barred from network access on a cell-by-cell basis, as indicated in the system information block (SIB) message. UEs are provisioned with one or more access classes, and if at least one access class on the UE is permitted access based on the SIB message, the UE is allowed to perform access attempts. The typical use of access class-based barring is to categorize users into two ranges: the range that is barred from access and the remaining set that is allowed access.
SUMMARYThe disclosure relates to determining priority access with dual access barring classes. A method for determining priority access with dual access barring classes includes receiving, at a client device, at least one high priority access barring class and at least one low priority access barring class, switching to the low priority access barring class, receiving an access barring message, and switching to the high priority access barring class in response to receiving the access barring message.
A method for determining priority access with dual access barring classes includes receiving a call request for a high priority call among a group of client devices, transmitting a notification to a network instructing it to transmit an access barring message in response to receiving the call request, wherein one or more members of the group of client devices switch to a high priority access class in response to receiving the access barring message, and suppressing call announcements for non-priority call requests after transmitting the notification.
An apparatus for determining priority access with dual access barring classes includes logic configured to receive, at a client device, at least one high priority access barring class and at least one low priority access barring class, logic configured to switch to the low priority access barring class, logic configured to receive an access barring message, and logic configured to switch to the high priority access barring class in response to receiving the access barring message.
An apparatus for determining priority access with dual access barring classes includes logic configured to receive a call request for a high priority call among a group of client devices, logic configured to transmit a notification to a network instructing it to transmit an access barring message in response to receiving the call request, wherein one or more members of the group of client devices switch to a high priority access class in response to receiving the access barring message, and logic configured to suppress call announcements for non-priority call requests after transmitting the notification.
An apparatus for determining priority access with dual access barring classes includes means for receiving, at a client device, at least one high priority access barring class and at least one low priority access barring class, means for switching to the low priority access barring class, means for receiving an access barring message, and means for switching to the high priority access barring class in response to receiving the access barring message.
An apparatus for determining priority access with dual access barring classes includes means for receiving a call request for a high priority call among a group of client devices, means for transmitting a notification to a network instructing it to transmit an access barring message in response to receiving the call request, wherein one or more members of the group of client devices switch to a high priority access class in response to receiving the access barring message, and means for suppressing call announcements for non-priority call requests after transmitting the notification.
A non-transitory computer-readable medium for determining priority access with dual access barring classes includes at least one instruction to receive, at a client device, at least one high priority access barring class and at least one low priority access barring class, at least one instruction to switch to the low priority access barring class, at least one instruction to receive an access barring message, and at least one instruction to switch to the high priority access barring class in response to receiving the access barring message.
A non-transitory computer-readable medium for determining priority access with dual access barring classes includes at least one instruction to receive a call request for a high priority call among a group of client devices, at least one instruction to transmit a notification to a network instructing it to transmit an access barring message in response to receiving the call request, wherein one or more members of the group of client devices switch to a high priority access class in response to receiving the access barring message, and at least one instruction to suppress call announcements for non-priority call requests after transmitting the notification.
A more complete appreciation of embodiments of the invention and many of the attendant advantages thereof will be readily obtained as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings which are presented solely for illustration and not limitation of the invention, and in which:
Aspects of the invention are disclosed in the following description and related drawings directed to specific embodiments of the invention. Alternate embodiments may be devised without departing from the scope of the invention. Additionally, well-known elements of the invention will not be described in detail or will be omitted so as not to obscure the relevant details of the invention.
The words “exemplary” and/or “example” are used herein to mean “serving as an example, instance, or illustration.” Any embodiment described herein as “exemplary” and/or “example” is not necessarily to be construed as preferred or advantageous over other embodiments. Likewise, the term “embodiments of the invention” does not require that all embodiments of the invention include the discussed feature, advantage or mode of operation.
Further, many embodiments are described in terms of sequences of actions to be performed by, for example, elements of a computing device. It will be recognized that various actions described herein can be performed by specific circuits (e.g., application specific integrated circuits (ASICs)), by program instructions being executed by one or more processors, or by a combination of both. Additionally, these sequence of actions described herein can be considered to be embodied entirely within any form of computer readable storage medium having stored therein a corresponding set of computer instructions that upon execution would cause an associated processor to perform the functionality described herein. Thus, the various aspects of the invention may be embodied in a number of different forms, all of which have been contemplated to be within the scope of the claimed subject matter. In addition, for each of the embodiments described herein, the corresponding form of any such embodiments may be described herein as, for example, “logic configured to” perform the described action.
A client device, referred to herein as a user equipment (UE), may be mobile or stationary, and may communicate with a radio access network (RAN). As used herein, the term “UE” may be referred to interchangeably as an “access terminal” or “AT”, a “wireless device”, a “subscriber device”, a “subscriber terminal”, a “subscriber station”, a “user terminal” or UT, a “mobile terminal”, a “mobile station” and variations thereof. Generally, UEs can communicate with a core network via the RAN, and through the core network the UEs can be connected with external networks such as the Internet. Of course, other mechanisms of connecting to the core network and/or the Internet are also possible for the UEs, such as over wired access networks, WiFi networks (e.g., based on IEEE 802.11, etc.) and so on. UEs can be embodied by any of a number of types of devices including but not limited to PC cards, compact flash devices, external or internal modems, wireless or wireline phones, and so on. A communication link through which UEs can send signals to the RAN is called an uplink channel (e.g., a reverse traffic channel, a reverse control channel, an access channel, etc.). A communication link through which the RAN can send signals to UEs is called a downlink or forward link channel (e.g., a paging channel, a control channel, a broadcast channel, a forward traffic channel, etc.). As used herein the term traffic channel (TCH) can refer to either an uplink/reverse or downlink/forward traffic channel.
Referring to
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Examples of protocol-specific implementations for the RAN 120 and the core network 140 are provided below with respect to
In
The GPRS Tunneling Protocol (GTP) is the defining IP protocol of the GPRS core network. The GTP is the protocol which allows end users (e.g., UEs) of a GSM or W-CDMA network to move from place to place while continuing to connect to the Internet 175 as if from one location at the GGSN 225B. This is achieved by transferring the respective UE's data from the UE's current SGSN 220B to the GGSN 225B, which is handling the respective UE's session.
Three forms of GTP are used by the GPRS core network; namely, (i) GTP-U, (ii) GTP-C and (iii) GTP′ (GTP Prime). GTP-U is used for transfer of user data in separated tunnels for each packet data protocol (PDP) context. GTP-C is used for control signaling (e.g., setup and deletion of PDP contexts, verification of GSN reach-ability, updates or modifications such as when a subscriber moves from one SGSN to another, etc.). GTP′ is used for transfer of charging data from GSNs to a charging function.
Referring to
The SGSN 220B is representative of one of many SGSNs within the core network 140, in an example. Each SGSN is responsible for the delivery of data packets from and to the UEs within an associated geographical service area. The tasks of the SGSN 220B includes packet routing and transfer, mobility management (e.g., attach/detach and location management), logical link management, and authentication and charging functions. The location register of the SGSN 220B stores location information (e.g., current cell, current VLR) and user profiles (e.g., IMSI, PDP address(es) used in the packet data network) of all GPRS users registered with the SGSN 220B, for example, within one or more PDP contexts for each user or UE. Thus, SGSNs 220B are responsible for (i) de-tunneling downlink GTP packets from the GGSN 225B, (ii) uplink tunnel IP packets toward the GGSN 225B, (iii) carrying out mobility management as UEs move between SGSN service areas and (iv) billing mobile subscribers. As will be appreciated by one of ordinary skill in the art, aside from (i)-(iv), SGSNs configured for GSM/EDGE networks have slightly different functionality as compared to SGSNs configured for W-CDMA networks.
The RAN 120 (e.g., or UTRAN, in UMTS system architecture) communicates with the SGSN 220B via a Radio Access Network Application Part (RANAP) protocol. RANAP operates over a Iu interface (Iu-ps), with a transmission protocol such as Frame Relay or IP. The SGSN 220B communicates with the GGSN 225B via a Gn interface, which is an IP-based interface between SGSN 220B and other SGSNs (not shown) and internal GGSNs (not shown), and uses the GTP protocol defined above (e.g., GTP-U, GTP-C, GTP′, etc.). In the embodiment of
In
A high-level description of the components shown in the RAN 120 and core network 140 of
Referring to
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In LTE, data and overhead information are processed as logical channels at a Radio Link Control (RLC) layer. The logical channels are mapped to transport channels at a Medium Access Control (MAC) layer. The transport channels are mapped to physical channels at a physical layer (PHY). Table 2 lists some logical channels (denoted as “L”), transport channels (denoted as “T”), and physical channels (denoted as “P”) used in LTE and provides a short description for each channel.
As shown in Table 2, different types of overhead information may be sent on different channels. Table 3 lists some types of overhead information and provides a short description for each type. Table 3 also gives the channel(s) on which each type of overhead information may be sent, in accordance with one design.
The different types of overhead information may also be referred to by other names. The scheduling and control information may be dynamic whereas the system and configuration information may be semi-static.
System information is provided by Radio Resource Control (RRC) function, and is structured in master information blocks (MIBs) and system information blocks (SIBs). A MIB is transmitted in fixed location time slots and includes parameters to aid the UE in locating the SIB Type 1 (SIB1) scheduled on the DL-SCH (e.g., DL bandwidth and system frame number). The SIB1 contains information relevant to scheduling the other system information and information on access to a cell. The other SIBs are multiplexed in System Information Messages. A SIB Type 2 (SIB2) message contains resource configuration information that is common for all UEs and information on access barring. The evolved universal terrestrial RAN (E-UTRAN) controls user access by broadcasting access class barring parameters in a SIB2 message, and the UE performs actions according to the access class in its universal subscriber identity module (USIM).
All UEs that are members of access classes one to ten are randomly allocated mobile populations, defined as access classes 0 to 9. The population number is stored in the SIM/USIM. In addition, UEs may be members of one or more of five special categories (access classes 11 to 15) also held in the SIM/USIM. The standard (3GPP TS 22.011, section 4.2) defines these access classes as follows:
-
- Class 15—PLMN Staff;
- Class 14—Emergency Services;
- Class 13—Public Utilities (e.g. water/gas suppliers);
- Class 12—Security Services;
- Class 11—For PLMN Use
A SIB2 message contains the following parameters for access control:
-
- For regular users with access class 0-9, the access is controlled by ac-BarringFactor and ac-BarringTime parameters in the SIB2 message.
- For users initiating emergency calls (access class 10) the access is controlled by the ac-BarringForEmergency parameter, which indicates whether access barring is enforced or not enforced.
- For UEs with access class 11 to 15, access is controlled by the ac-BarringForSpecialAC parameter, which indicates whether access barring is enforced or not enforced.
A UE is allowed to perform access procedures when the UE is a member of at least one access class that corresponds to the permitted classes, as signaled over the air interface. The UEs generates a random number to pass the “persistent” test in order for the UE to gain access. To gain access, a UE random number generator's outcome needs to be lower than the threshold set in the ac-BarringFactor. By setting the ac-BarringFactor to a lower value, the access from regular users is restricted. The users with access class 11 to 15 can gain access without any restriction.
In
Turning back to the eHRPD RAN, in addition to interfacing with the EPS/LTE network 140A, the eHRPD RAN can also interface with legacy HRPD networks such as HRPD network 140B. As will be appreciated the HRPD network 140B is an example implementation of a legacy HRPD network, such as the EV-DO network from
Referring to
While internal components of UEs such as the UEs 300A and 300B can be embodied with different hardware configurations, a basic high-level UE configuration for internal hardware components is shown as platform 302 in
Accordingly, an embodiment of the invention can include a UE (e.g., UE 300A, 300B, etc.) including the ability to perform the functions described herein. As will be appreciated by those skilled in the art, the various logic elements can be embodied in discrete elements, software modules executed on a processor or any combination of software and hardware to achieve the functionality disclosed herein. For example, ASIC 308, memory 312, API 310 and local database 314 may all be used cooperatively to load, store and execute the various functions disclosed herein and thus the logic to perform these functions may be distributed over various elements. Alternatively, the functionality could be incorporated into one discrete component. Therefore, the features of the UEs 300A and 300B in
The wireless communication between the UEs 300A and/or 300B and the RAN 120 can be based on different technologies, such as CDMA, W-CDMA, time division multiple access (TDMA), frequency division multiple access (FDMA), Orthogonal Frequency Division Multiplexing (OFDM), GSM, or other protocols that may be used in a wireless communications network or a data communications network. As discussed in the foregoing and known in the art, voice transmission and/or data can be transmitted to the UEs from the RAN using a variety of networks and configurations. Accordingly, the illustrations provided herein are not intended to limit the embodiments of the invention and are merely to aid in the description of aspects of embodiments of the invention.
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Generally, unless stated otherwise explicitly, the phrase “logic configured to” as used throughout this disclosure is intended to invoke an embodiment that is at least partially implemented with hardware, and is not intended to map to software-only implementations that are independent of hardware. Also, it will be appreciated that the configured logic or “logic configured to” in the various blocks are not limited to specific logic gates or elements, but generally refer to the ability to perform the functionality described herein (either via hardware or a combination of hardware and software). Thus, the configured logics or “logic configured to” as illustrated in the various blocks are not necessarily implemented as logic gates or logic elements despite sharing the word “logic.” Other interactions or cooperation between the logic in the various blocks will become clear to one of ordinary skill in the art from a review of the embodiments described below in more detail.
The various embodiments may be implemented on any of a variety of commercially available server devices, such as server 500 illustrated in
With conventional network access priority, there is a lack of ability to leverage higher access priority for UE's with dual access priority. For example, it may desirable for a user to have one access priority during work hours and another access priority during off-work hours. Conventional network access priority solutions also lack UE-originated group priority for unicast calls. Additionally, conventional solutions lack access barring upon commencement of group calls. Further, they lack page/call announcement suppression for non-priority users in cells where access barring is being performed.
As an example, it would be beneficial to allow public safety users to gain priority access when they are off work and use the same device at work and off work. Such a device would need to have dual access classes. To further improve the access barring capability for a targeted group of users out of the set of UEs within the higher access class, such as first responders and public safety users, only the UEs that belong to the advertised group are allowed to perform access. It would also be beneficial to allow call originators with higher priority to initiate access barring in a target area. It would further be beneficial to reduce pages/call announcements for low priority users in the target area to improve the access of high priority UEs.
The second step is the establishment of an application-oriented traffic bearer (i.e. packet priority allocation) using the QoS class identifier (QCI) and the allocation and retention priority (ARP). At 630, the UE requests a dedicated traffic bearer for the application. This includes a GBR or N-GBR traffic bearer and QoS priority mechanisms, such as the QCI (i.e. 1 to 9 GBR and N-GBR), which has associated priorities 1 to 9, where 1 is the highest. This also includes the ARP priority, which has a value from 1 to 15, where 1 is the highest. The ARP also indicates the preemption capability (yes/no) and the preemption vulnerability (yes/no).
At 640, the traffic bearer is established by the network.
However, high priority users may not need and/or should not be provisioned with high priority access at all times. For example, public safety users need high priority access while on duty, but not necessarily when they are off duty. Conventionally, when off duty during an access barring condition, such devices also get priority access, which may not be desirable.
Accordingly, an embodiment provides UEs with dual access priority. Specifically, a UE (on the universal integrated circuit card (UICC)) can be provisioned with two radio access classes, a high priority access class and a low priority access class. For example, public safety users can be provisioned with a high priority access class, such as access class 15, for when they are on duty and a low priority access class, such as access class 2, for when they are off duty. The network sends access barring information in the SIB2 message and the UEs perform access barring based on the SIB2 message reception. The UE uses the higher access class only when the user requires high priority, such as when the user is on-duty for public safety services. For all off duty times, the device only uses a lower access class.
For UE-originated calls, such as a public safety user originating a call, the UE uses the highest access priority assigned to perform access procedures. The UE also notifies the application server 170 using the call signaling messages at the application layer that the call is a high priority call and the participants must be given access priority in a predefined geographic location.
For mobile terminated calls, on receipt of the call signaling, the application server 170 contacts the LTE infrastructure, such as core network 140 in
For page/call announcement suppression, when access barring is applied to a geographic location, the MME(s) serving the location will suppress UE pages/call announcements for UEs that have a lower access class than the access class of the high priority call.
At 810, when no priority groups are active or no access barring is enforced, the SIB2 message indicates no access barring and normal operation ensues. At 815, UEx 800C, which has a high priority access class and a regular/low priority access class, i.e. dual priority, completes a low priority call, i.e. a call with an access class for access procedures of less than 10. The user of UEx 800C may be an off-duty public safety officer, and because the user is off-duty, UEx 800C is in the regular/low priority access class mode.
At 820, a communications group of dual priority users, represented as UEs1 . . . n 800B, switch to their lower access classes, either based on time, a network event, and/or user action. For example, if the users of UEs1 . . . n 800B are public safety officers, UEs1 . . . n 800B may switch to their lower access classes when the users go off-duty. This switch may be based on the time of day corresponding to the end of the users' shifts or to direct user interaction, such as manual priority mode selection.
At 825, App* Client 800A initiates a high priority call to the communications group represented as UEs1 . . . n 800B and transmits the call request to the application server 170, indicating that the call requires high priority access. At 830, the application server 170 receives the high priority call request. Based on the priority policy, the application server 170 determines that the call requires priority access and notifies the core networks associated with UEs 800A-C, i.e. unicast networks 140a and 140b, to advertise the SIB2 message with access barring. Alternatively, the SIB2 message can also contain group identification information. In response, unicast networks 140a and 140b transmit the access barring SIB2 message to the UEs 800A-C.
At 835A, the application server 170 suppresses non-priority call announcements. At 835B, in response to receiving the notification from the application server 170, the unicast network 140b also suppresses non-priority call announcements, independently of the application server 170 suppressing non-priority call announcements at 835A. At 840, in response to receiving the updated SIB2 message from the unicast network 140b, dual priority UEs1 . . . n 800B switch to their highest available priority access class. At 845, low priority UEs or UEs that are not members of the high priority group, such as UEx 800C, perform access barring in response to receiving the SIB2 message.
At 850, the App* Client 800A determines whether it is a member of the high priority call, which it is. At 855, the application server 170 sends the call announcement to the communications group of UEs1 . . . n 800B. At 860, because the dual priority UEs1 . . . n 800B have a priority access class at least as high as the priority access class of the high priority call and/or they are members of the high priority group, they are permitted to access the network.
At 865, the call is connected between App* Client 800A and UEs1 . . . n 800B. At 870, the call is completed and terminated. At 875, the application server 170 notifies unicast networks 140a and 140b to terminate access barring. In response, unicast networks 140a and 140b transmit an updated SIB2 message. At 880A, the application server 170 stops suppressing call announcements, and at 880B, the unicast network 140b also stops suppressing call announcements, independently of the application server 170. At 885, UEx 800C is allowed to access the network again.
At 910, the client device receives at least one high priority access barring class and at least one low priority access barring class. The high and low priority access barring classes may be provisioned by a server, such as application server 170, the RAN, such as RAN 120, the network, such as core network 140, the network administrator, the manufacturer of the client device, or the like. At 920, the client device switches to the low priority access barring class. The client device may switch to the low priority access barring class based on a time of day, a network event, and/or user action.
At 930, the client device receives an access barring message. A server, such as application server 170, transmits a notification to a network, such as unicast network 140a and/or 140b in
At 940, in response to receiving the access barring message, the client device switches to the high priority access barring class. Although the client device switches to its high priority access barring class, it may not be able to access the network if the access barring message indicates a higher access barring class than the client device's high priority access barring class. At 950, the client device receives a call announcement for a group call among a high priority group of client devices. Block 950 is optional, as the client device may not be part of the group call.
At 960, the client device switches to the low priority access barring class upon termination of the group call. The server may transmit a notification to the network instructing it to terminate access barring in response to termination of the group call among the high priority group of client devices. The server may stop suppressing call announcements for non-priority call requests after transmitting the notification. The network may stop suppressing call announcements for non-priority call requests after receiving the notification.
At 1010, the server provisions a plurality of client devices with at least one high priority access barring class and at least one low priority access barring class. Block 1010 is optional, as the access barring classes may alternatively be provisioned by the RAN, such as RAN 120, a network, such as core network 140, the network administrator, the manufacturer of the client device, or the like. The plurality of client devices may switch to the low priority access barring class in response to the provisioning. The plurality of client devices may switch to the low priority access barring class based on a time of day, a network event, and/or user action.
At 1020, the server receives a call request for a high priority call among a group of client devices.
At 1030, in response to receiving the call request, the server transmits a notification to the network instructing it to transmit an access barring message, where one or more members of the group of client devices may switch to a high priority access class in response to receiving the access barring message. The access barring message comprises a bitmask indicating that the group of client devices is permitted to access the network. The network suppresses call announcements for non-priority call requests after receiving the notification. The network may be a unicast network, such as unicast network 140a or 140b in
At 1040, the server suppresses call announcements for non-priority call requests after transmitting the notification. At 1050, the server transmits a call announcement for the high priority call. At 1060, the server transmits a notification to the network instructing it to terminate access barring in response to termination of the high priority call. At 1070, the server stops suppressing call announcements for non-priority call requests after transmitting the notification. The network may stop suppressing call announcements for non-priority call requests after receiving the notification.
While the embodiments above have been described primarily with reference to 1×EV-DO architecture in CDMA2000 networks, GPRS architecture in W-CDMA or UMTS networks and/or EPS architecture in LTE-based networks, it will be appreciated that other embodiments can be directed to other types of network architectures and/or protocols.
Those of skill in the art will appreciate that information and signals may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
Further, those of skill in the art will appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The various illustrative logical blocks, modules, and circuits described in connection with the embodiments disclosed herein may be implemented or performed with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
The methods, sequences and/or algorithms described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such that the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal (e.g., UE). In the alternative, the processor and the storage medium may reside as discrete components in a user terminal.
In one or more exemplary embodiments, the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. Disk and disc, as used herein, includes compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.
While the foregoing disclosure shows illustrative embodiments of the invention, it should be noted that various changes and modifications could be made herein without departing from the scope of the invention as defined by the appended claims. The functions, steps and/or actions of the method claims in accordance with the embodiments of the invention described herein need not be performed in any particular order. Furthermore, although elements of the invention may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.
Claims
1. A method for determining priority access with dual access barring classes, comprising:
- receiving, at a server, a call request for a high priority call among a group of client devices;
- transmitting a notification to a network instructing the network to transmit an access barring message in response to receiving the call request, wherein one or more members of the group of client devices switch to a high priority access class in response to receiving the access barring message; and
- suppressing call announcements for non-priority call requests after transmitting the notification.
2. The method of claim 1, wherein the access barring message comprises a bitmask indicating that the group of client devices is permitted to access the network.
3. The method of claim 1, further comprising:
- provisioning a plurality of client devices with at least one high priority access barring class and at least one low priority access barring class.
4. The method of claim 3, wherein the plurality of client devices switch to the at least one low priority access barring class in response to the provisioning.
5. The method of claim 4, wherein the switching to the at least one low priority access barring class is based on a time of day, a network event, and/or user action.
6. The method of claim 1, wherein the network suppresses the call announcements for non-priority call requests after receiving the notification.
7. The method of claim 1, wherein the network comprises a unicast network.
8. The method of claim 1, wherein the access barring message comprises a bitmask indicating a group of client devices permitted to access the network.
9. The method of claim 1, wherein the access barring message comprises a system information block type 2 (SIB2) message.
10. The method of claim 1, further comprising:
- transmitting a call announcement for the high priority call.
11. The method of claim 1, further comprising:
- transmitting a notification to the network instructing the network to terminate access barring in response to termination of the high priority call.
12. The method of claim 11, further comprising:
- stopping the suppressing of the call announcements for non-priority call requests after transmitting the notification.
13. The method of claim 11, wherein the network stops suppressing the call announcements for non-priority call requests after receiving the notification.
14. An apparatus for determining priority access with dual access barring classes, comprising:
- a network interface configured to receive a call request for a high priority call among a group of client devices; and
- at least one processor configured to: cause the network interface to transmit a notification to a network that instructs the network to transmit an access barring message in response to reception of the call request, wherein one or more members of the group of client devices switch to a high priority access class in response to reception of the access barring message; and suppress call announcements for non-priority call requests after transmission of the notification.
15. The apparatus of claim 14, wherein the access barring message comprises a bitmask indicating that the group of client devices is permitted to access the network.
16. The apparatus of claim 14, wherein the at least one processor is further configured to:
- cause the network interface to provision a plurality of client devices with at least one high priority access barring class and at least one low priority access barring class.
17. The apparatus of claim 16, wherein the plurality of client devices switch to the at least one low priority access barring class in response to the provisioning.
18. The apparatus of claim 17, wherein the plurality of client devices switch to the at least one low priority access barring class based on a time of day, a network event, and/or user action.
19. The apparatus of claim 14, wherein the network suppresses the call announcements for non-priority call requests after reception of the notification.
20. The apparatus of claim 14, wherein the network comprises a unicast network.
21. The apparatus of claim 14, wherein the access barring message comprises a bitmask indicating a group of client devices permitted to access the network.
22. The apparatus of claim 14, wherein the access barring message comprises a system information block type 2 (SIB2) message.
23. The apparatus of claim 14, wherein the at least one processor is further configured to:
- cause the network interface to transmit a call announcement for the high priority call.
24. The apparatus of claim 14, wherein the at least one processor is further configured to:
- cause the network interface to transmit a notification to the network that instructs the network to terminate access barring in response to termination of the high priority call.
25. The apparatus of claim 24, wherein the at least one processor is further configured to:
- stop the suppression of the call announcements for non-priority call requests after transmission of the notification.
26. The apparatus of claim 24, wherein the network stops suppression of the call announcements for non-priority call requests after reception of the notification.
27. An apparatus for determining priority access with dual access barring classes, comprising:
- a communication means for receiving a call request for a high priority call among a group of client devices; and
- a processing means for: causing the communication means to transmit a notification to a network that instructs the network to transmit an access barring message in response to reception of the call request, wherein one or more members of the group of client devices switch to a high priority access class in response to reception of the access barring message; and suppressing call announcements for non-priority call requests after transmitting the notification.
28. A non-transitory computer-readable medium for determining priority access with dual access barring classes, comprising:
- at least one instruction to cause a server to receive a call request for a high priority call among a group of client devices;
- at least one instruction to cause the server to transmit a notification to a network that instructs the network to transmit an access barring message in response to reception of the call request, wherein one or more members of the group of client devices switch to a high priority access class in response to reception of the access barring message; and
- at least one instruction to cause the server to suppress call announcements for non-priority call requests after transmission of the notification.
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Type: Grant
Filed: Jul 7, 2015
Date of Patent: Aug 2, 2016
Patent Publication Number: 20150312843
Assignee: QUALCOMM INCORPORATED (San Diego, CA)
Inventors: Kirankumar Bhoja Anchan (San Diego, CA), Karthika Paladugu (San Diego, CA), Arvind Vardarajan Santhanam (San Diego, CA)
Primary Examiner: Khai M Nguyen
Application Number: 14/793,672
International Classification: H04W 72/00 (20090101); H04W 48/02 (20090101); H04W 74/00 (20090101); H04W 48/16 (20090101); H04M 3/00 (20060101); H04W 48/08 (20090101); H04W 4/08 (20090101); H04W 12/08 (20090101);
